Ultra LSX 750 Power Supply Review
Overload Tests
Contents
Below you can see the maximum we could pull from this power supply. We couldn’t pull more than that because the power supply shut down, showing that its protections are working just fine. During this extreme overload condition, however, noise level was way above the maximum allowed on most outputs, at 278.2 mV on +12VA, 344.8 mV on +12VB, 320.2 mV at -12 V, and 463.4 mV at +5VSB. Noise level on +5 V (31.2 mV) and +3.3 V (32.3 mV) was still below the maximum allowed.
| Input | Overload Test |
| +12VA | 31 A (372 W) |
| +12VB | 31 A (372 W) |
| +5V | 12 A (60 W) |
| +3.3 V | 12 A (39.6 W) |
| +5VSB | 3 A (15 W) |
| -12 V | 0.5 A (6 W) |
| Total | 849.2 W |
| % Max Load | 113.2% |
| Room Temp. | 47.1° C |
| PSU Temp. | 52.0° C |
| AC Power | 1,047 W |
| Efficiency | 81.1% |
| AC Voltage | 102.8 V |
| Power Factor | 0.997 |